Improvement in combination-locks



A. E. PETERS.

Combina'tion-L ock. NO. 167,929, Patented Sept.21,l875.

ATTORNEYS.

'N PETERS, PHOTO-HTHOGRIPHER. WASHINGTON, D C.

UNITED B 3 I1 OFFICE;

ALFRED nlrnrrn'n s, oFMoivoroiv, CANADA.

l MPROVEMENTlN COMBINATION-LOCKS- Specification forming part ef Letters Patent No. 167,929, dated September 21, 1875; application inea I v Julymlsmv 4 To all whom it may concern:

Be it known that I, ALFRED E. PETERS, of Moncton, in the county of Westmoreland,

Province of New Brunswick and Dominion of Canada, have invented a new and Improved Combination-Lock, of which the following is a specification:

In the accompanying drawing, Figure 1 my improved combination-lock.

Similar letters of reference indicate corre-. sponding parts.

The object of my invention is to furnish a combination-lock for trunks, boxes, safes, and other purposes, that may be set with great facility without giving an opportunity to be picked, as the parts cannot be reached by tools, and the lock be set to a large number of combinations.

The invention consists of a spring-acted roller with interchangeable pins, that are acted upon by spring-bars depressed by a pin inserted through perforations of the faceplate. The springs are engaged by a sliding and toothed spring-bar that releases the preceding spring, and secures thereby the return of the spring-acted roller, except when the correct combination is set in regular succession, which prevents the return of the roller and allows the throwing of the bolt.

In the drawing, A represents the casing of my improved combination-lock for trunks and other purposes, which casing is provided at the face-plate with raised part B, having a series of perforations, a, that are numbered or lettered, and admit the insertion of a pin of suitable thickness. Behind the holes are applied to the inner side of the face-plate a series of spring-bars, E, which correspond in numbers with the holes a, and are fastened at one end and loose at the other, so that by the insertion of the pin the corresponding springbar is depressed. A toothed and recessed bar, F, is placed below the holes and at right angles to the springs, so that the same may enter into the corresponding teeth when depressed and be retained by the recesses back of each tooth. The toothed bar slides in supports F, and is acted upon by a spring, I), that carries the bar by the depression of a spring. E, sidewise, till the same has passed into the recess, and is then looked therein by have to be arranged in longitudinal direction 7 on the roller. When more are used a larger number of lines have to be provided, the pins being secured into the holes of the roller according to the numbers selected and in consecutive order on the longitudinal rows of holes. The roller D is acted upon at one end by a spiral spring, 0, that has a tendency to throw the same into its original position, its other end being recessed to allow the sliding of the lock-bolt 0. when the recessed part faces the same, so as to allow its passage. In any other position'of the recessed roller end the bolt cannot be thrown and the lock be opened. When the-pin is inserted according to the regular succession oi' numbers that have been selected, the spring-bars are depressed, striking, in this case, one pin after the other, and retaining the roller in position by the consecutive contact of spring and pin, until the roller is fully turned and admits the throwing back of .the bolt. If, however, any other spring-bar 'is depressed or the regular succession of the numbers not kept up, the preceding spring is released and the roller instantly carried back to its original position, or not affected at all, as no pin is in the way of the depressed spring-bar.- Whatever spring may be depressed, the roller cannot be turned so as to open the bolt without the use of the combination as selected. The same may be set to a different combination by removing the back plate and changing the pins in the roller accordingly. For closing the lock the bolt is Having thus described my invention, 1.

claim as new and desire to secure by Letters Patent 1. A combination-lock composed of a series of spring-bars capableof being depressed at the free ends, a sliding and toothed springbar, and a spring-roller with interchangeable pins and recessed end, substantially as and for the purpose set forth.

2. The combination of the spring-bars, capable of depression by a pin inserted through holes of the iace-p1ate,with a sliding and spring aeted bar, having teeth and recesses corresponding to the number of springs, so as to lock each spring when depressed,- and re lease the same by the locking of the next spring, substantially as set forth. v A ALFRED EDWARD PETERS.

Witnesses:

JosH. PETERS,

G. F. ATKINSON. 

